I was able to apply the update, but just like the last time there was weirdness where the Connect mobile app didn’t recognize that the update applied and kept wanting to offer it. Having seen this before, I checked with my Edge 530, and it went on the first time. So don’t be surprised if you see this on your end as well.
It will be interesting to see if I notice any differences. In all of the comparative testing I’ve done so far, my Rally XC have been very accurate. That has not been the case for some of my friends though… So, crossing my fingers that this fixes those issues.